I am using Geany as my favourite IDE for debugging R code under Linux (Ubuntu 18.04). I have noticed that if I copy and paste say a simple command line below it works

data = read.csv("/home/marco/R/data/mydata.csv")

but if I use the line below it does not work because it cannot find the path

data = read.csv(".//data/mydata.csv")

Have anyone else in the forum experienced a similar problem? Thank you very much for help.